This is a somewhat special day for me in particular, since back in eighth grade, I calculated some 1083 digits of pi with an algorithm I developed (repeatedly making use of the Pythagorean theorem to inscribe a regular polygon with 4*2^n sides inside a circle) and, with the help of my dad, wrote into a simply computer program. I can still recite the number to 25 decimal digits, 3.1415926535897932384626433.